How can I check if there are any selected items in Java JList



To check if there are any selected items, use the following:

boolean res = !list.isSelectionEmpty();

The value of res would be TRUE IF we have a selected item in the JList.

The following is an example to check if there are any selected items in JList:

Example

package my; import java.awt.event.*; import java.awt.*; import javax.swing.*; class SwingDemo extends JFrame {    static JFrame frame;    static JList list;    public static void main(String[] args) {       frame = new JFrame("JList Demo");       SwingDemo s = new SwingDemo();       JPanel panel = new JPanel();       String sports[]= {"Squash","Fencing","Cricket","Football","Hockey","Rugby"};       list = new JList(sports);       list.setSelectedIndex(4);       boolean res = !list.isSelectionEmpty();       System.out.println(res);       panel.add(list);       frame.add(panel);       frame.setSize(550,300);       frame.setVisible(true);    } }

Output

The output in the console would be TRUE since we have found a selected item in the JList.

Updated on: 2019-07-30T22:30:26+05:30

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